I can't for the life of me work out why main content is disappearing in IE7 & 8

http://www.cricketcoachingclinics.com.au/
but this page works
http://www.cricketcoachingclinics.com.au/venue.html

Difference is (venue) page has content div only
Rest of site has left div (float left) and right div (float right) inside content div with plenty of space?
Any ideas?
Could it be too many comments bug??